ACC 210 Week 4 DQ 1

Week 4 DQsACC 210 Week 4 DQ 1How do primary keys eliminate redundant data between tables and ensure the integrity of the data? What are some examples of primary keys? How are they used or applied to data?The primary key of a relational table identifies each record in the table. The data can be normal attributes, as long as it's ensured to be primary, such as Social Security numbers. If not, the data can be generated by the database primary keys which include one singular attribute or a collection of attributes. Integrity checking is a user-defined rule for a column, or multiple column